Tus naj npawb ntawm cov hniav
Muaj lwm qhov tseem ceeb ntawm qhov kawg zeb, uas tuaj yeem hais tau tias yog qhov tseem ceeb ntawm qhov kawg ntawm lub ntsej muag saib, uas yog, tus naj npawb ntawm cov hniav ntawm qhov kawg zeb.
Muaj ntau qhov sib xyaw ua ke ntawm tag nrho cov hniav thiab cov hniav uas hla qhov nruab nrab ntawm qhov kawg zeb, raws li pom hauv daim duab 3-14 ntawm sab laug mus rau sab xis: ib tug hniav zeb, 2 hniav zeb - 2 tooth undercenter, 2 tooth mill - 1 tooth undercenter, 3 tooth mill - 1 tooth undercenter, 4 tooth mill - 2 tooth overcenter, thiab multi-tooth mill - 0 tooth undercenter. Tus naj npawb ntawm cov hniav ntawm lub tshuab txiav milling yog cuam tshuam nrog kev ua haujlwm ntawm milling, thiab qhov rigidity ntawm milling cutter yog cuam tshuam nrog txoj kab uas hla ntawm lub hauv paus ntawm lub milling cutter. Daim duab 3-15 yog ib daim duab yooj yim ntawm kev sib raug zoo ntawm tus naj npawb ntawm cov hniav cog ntawm cov milling cutter thiab lub rigidity thiab nti peev xwm ntawm lub milling cutter.
Lub 2- hniav (qhov) milling cutter yog tus cwj pwm los ntawm qhov chaw tshem tawm cov nti loj thiab tsis txaus rigidity, uas yog tsim rau cov ntaub ntawv ntev.
Lub 3- hniav (qhov) milling cutter yog tus cwj pwm los ntawm qhov chaw loj nti, zoo rigidity, siab txiav efficiency thiab zoo versatility.
Lub 4- hniav (qhov) milling cutter yog tus cwj pwm los ntawm qhov tsis muaj qhov chaw tshem tawm me ntsis, tab sis lub milling cutter muaj qhov zoo rigidity, uas tsim nyog rau kev ua tiav zoo thiab qhov zoo ntawm qhov chaw ua haujlwm.
Lub 6- cov hniav (qhov) milling cutter yog tus cwj pwm los ntawm qhov chaw tshem tawm me me, tab sis lub tshuab txiav milling muaj qhov zoo heev, qhov milling cutter no zoo heev rau kev ua tiav, kev ua haujlwm zoo, kev ua haujlwm siab hardness, thiab lub tshuab ua haujlwm zoo. yog zoo heev.
Ntawm chav kawm, nws yog ib qho ua tau kom nce qhov chaw nti nrog tib tus naj npawb ntawm cov hniav, tab sis qhov no yuav ua rau txo qis hauv rigidity. Qhov no geometry (saib daim duab 3-16) yog tsim rau machining non-ferrous cov ntaub ntawv uas tsis muaj zog, xws li txhuas thiab tooj liab. Ntawm qhov tod tes, vim tias lub zog ntawm cov hlau zoo li no yog qhov tsawg, lub zog txiav ntawm lub cuab yeej yog me me, thiab lub zog yuav tsum tau los ntawm lub cuab yeej kuj yog me me, thiab lub zog qis tseem muaj peev xwm rau txoj haujlwm milling; Ntawm qhov tod tes, cov khoom siv no muaj cov cua sov uas tsis tshua muaj siab vim nws tsis muaj zog txiav.
Txawm li cas los xij, nws yog qhov tseeb vim tias qhov txiav quab yuam thiab txiav cov cua sov ntawm cov khoom siv no tsawg, thiab cov nyiaj txiav tuaj yeem nce ntxiv tom qab lub nti tuav lub peev xwm tau nce, tab sis qhov txiav txiav ntau ntxiv nce lub zog txiav, kom lub rigidity. cov cuab yeej yuav tsum tau kho kom zoo dua qub, yog li qhov kawg zeb nrog ob chav core inch raws li qhia hauv daim duab 3-17 yuav tsum tau siv. Lub milling cutter qhia ntawm no yog Jabro-Solid los ntawm Seco Cov Cuab Yeej hauv xim, thaum Proto·max TM tG los ntawm Walter Cov Cuab Yeej yog pom hauv grey. Qhov tsim ntawm ob chav tub ntxhais txoj kab uas hla muab qee qhov sib npaug ntawm nti tuav lub peev xwm thiab cov cuab yeej rigidity.
Daim duab 3-18 yog daim duab schematic ntawm qhov zawj hauv qab ntawm ib qho tshwj xeeb hloov milling cutter. Nyob rau hauv cov ntaub ntawv no, lub rigidity ntawm kev hloov milling cutter yog ntau dua li qhov qub groove hauv qab, thiab lub deformation ntawm daim tawv nqaij thaum tawm yog intensified, thiab cov chips yog nruj dua.
Muaj cov qauv sib txawv rau tib tus lej ntawm cov hniav, uas yog, cov hniav tsis sib xws. Daim duab 3-19 yog daim duab schematic ntawm ob hom milling cutters tsis sib xws. Cov hniav tsis sib npaug tuaj yeem tsim cov kev sib hloov ntawm cov zaus thaum txiav, uas tsis yooj yim rau resonate nrog lub tshuab cuab yeej thiab suppresses cov cuab yeej vibration thaum lub sij hawm milling.
Ntxiv nrog rau tus lej ntawm cov hniav, lub peev xwm nti ntawm lub tshuab txiav milling kuj tseem cuam tshuam nrog cov duab geometric ntawm cov hniav ncig, thiab cov hniav ncig ntawm cov milling cutter tau tham hauv qab no.
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Circumferential hniav
Cov hniav cutter ntawm lub voj voog sab nraud ntawm lub tshuab kawg yog hu ua cov hniav cimferential. Cov hniav hlais yog qhov tseem ceeb ntawm qhov kawg zeb koom nrog kev sib tsoo ntawm phab ntsa.
◆ Helix lub kaum sab xis
Thawj qhov tsis sib xws ntawm cov hniav uas yuav tsum tau tham txog yog lub kaum sab xis helix, uas yog lub kaum sab xis ntawm txoj kab tangent ntawm helical txiav ntug ntawm milling cutter thiab axis ntawm milling cutter, raws li qhia hauv daim duab 3-20.
Hauv kev txiav txoj kev xav, lub kaum sab xis helix kuj yog lub kaum sab xis axial rake ntawm lub voj voog sab nraud ntawm lub cuab yeej (thov saib daim duab 1-33 rau lub kaum sab xis axial rake thiab cov ntawv hais txog).
Cov teebmeem tseem ceeb ntawm cov kaum sab xis sib txawv ntawm cov mills kawg ntawm kev txiav kev ua tau zoo yog pom hauv daim duab 3-21. Raws li koj tuaj yeem pom los ntawm daim duab, qhov ncaj flute kawg zeb (helix kaum 8-0 degree) ntawm sab xis muaj xoom axial txiav quab yuam vim xoom axial rake lub kaum sab xis, thiab tag nrho cov txiav quab yuam yog nyob rau hauv radial kev taw qhia. nrog lub weakest rigidity, yog li nws yog nquag mus tham. Ntawm qhov tod tes, sab laug thiab nruab nrab kauv raj tshuab raj tau muab faib ua axial cov lus qhia vim yog ib feem ntawm lub zog txiav (axial kev taw qhia yog cov kev taw qhia nrog qhov zoo tshaj plaws rigidity ntawm lub tshuab txiav), thiab cov radial load yog txo, thiab kev sib tham tsis yooj yim tshwm sim.
Ntawm qhov tod tes, cov nti ntws ntawm qhov ncaj groove milling cutter yog transverse, uas yog ib qho yooj yim rau kev cuam tshuam los ntawm qhov chaw ntawm lub workpiece thiab tsim ib tug thib ob txiav, thiab nti tshem tawm kev ua tau zoo yog tsis zoo. Cov chips ntawm cov kauv tshuab raj yog tawm los ntawm qhov txiav cheeb tsam perpendicular mus rau qhov txiav, thiab cov nti khiav tawm kev ua tau zoo tau zoo tuaj.
Daim duab 3-22 qhia tau hais tias cov nyhuv ntawm cov hniav cutter thiab helix lub kaum sab xis ntawm lub axial feem ntawm tag nrho cov txiav ntev. Rau txoj haujlwm txiav ntawm 10 hli txoj kab uas hla milling cutter nrog lub dav txiav (tseem hu ua "radial tob ntawm txiav") ntawm 10 hli thiab txiav qhov tob (tseem hu ua "axial tob ntawm txiav") ntawm 15 hli, axial projection ntawm tag nrho kev sib cuag ntug ntev ntawm milling cutter nrog 2 qhov thiab 30 degree helix lub kaum sab xis yog li 17 hli; Thaum siv lub 3-groove 30 degree helix cutter, axial projection ntawm tag nrho kev sib cuag ntug ntev nce mus txog 25 mm. Thaum siv ib qho 4-groove 30 degree helix lub kaum sab xis milling cutter, axial projection ntawm tag nrho kev sib cuag ntug ntev yog nce mus txog 30 mm, thiab thaum kawg thaum ib tug 6-groove 60 degree helix lub kaum sab xis milling cutter yog siv, axial projection ntawm tag nrho kev sib cuag ntug ntev tuaj yeem nce mus txog 47 hli. Cov ntaub ntawv no qhia tau hais tias nrog kev nce ntawm cov milling cutter hniav, tus naj npawb ntawm cov npoo nyob rau hauv kev sib cuag nrog lub workpiece kuj nce, lub axial projection ntawm tag nrho cov kev sib cuag ntug ntev nce, thiab cov nyhuv ntawm nce lub helix lub kaum sab xis yog zoo sib xws. Nrog rau qhov nce ntawm qhov axial projection ntawm tag nrho cov kev sib cuag ntug ntev, lub load rau ib chav tsev hniav ntev yog txo, thiab txiav efficiency yuav raug txhim kho nyob rau hauv lub premise tias cov hniav load tseem zoo ib yam.
Daim duab 3-23 qhia txog plaub qhov sib txawv ntawm kev txiav cov lus qhia sib txawv thiab cov lus qhia kev sib hloov ntawm lub voj voog, ib qho yog txoj cai helical hniav txoj cai txiav, feem ntau hais lus, cov kev taw qhia ntawm milling cutter feem ntau yog txiav txim siab los ntawm spindle rotation kev taw qhia ntawm lub tshuab milling, thiab tom qab txiav cov kev taw qhia, lub helix txiav txim siab cov kev taw qhia ntawm axial txiav quab yuam.
Daim duab 3-24 qhia txog JS840 milling cutter nrog ob lub helix coj. Qhov no milling cutter yog siv los tshuab rau sab npoo ntawm carbon fiber composite panels. Txij li cov pa roj carbon fiber ntau panels yog tsim los ntawm ntau yam khoom sib txawv, nws yog ib qho nyuaj kom tsis txhob delamination nrog cov pa milling cutters. Qhov zoo ntawm JS840 milling cutter yog: lub txiav quab yuam nyob rau hauv qhov kev taw qhia yog muab faib ua downward siab thiab central quab yuam: lub nti qhov chaw yog loj, uas yog conducive rau nti tshem tawm: lub txiav cheeb tsam yog me me, uas ua rau tsawg txiav tshav kub. thiab txiav quab yuam: tsuas yog lub zog shear yog tsim los ntawm fiber ntau, thiab tsis muaj torsion rau nruab nrab.
Daim duab 3-25 qhia Sumitomo Electric's GSXVL hom anti-vibration kawg zeb. Qhov kawg zeb no tsis tsuas yog siv cov hniav tsis sib npaug zoo li cov hauv daim duab 3-19, tab sis kuj tseem txhim kho kev tiv thaiv kev vibration thaum machining ntawm sab nrog cov kaum sab xis tsis sib xws.
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